Improvement in pumps



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DAVID 0. HOLMAN, OF ADAMS, NEW YORK.

Letters Patent No. 108,265, dated October 11. 1870.

To all whom it may concern Be it known that I, DAVID O. HOLMAN, of Adams, in the county of J eiferson and State of New York, have invented anew and valuable Improvement in Pumps; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this'speciiioation, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation ot' a vertical section of my invention, taken' through the axes of the cylinders.

Figure 4 is a central vertical section taken at'right angles ,to the above.

Figures 2-and 3 are details.

My invention relates to pumps, and consists, mainly, in the construction and novel arrangement of devices, whereby a force and suction-pump is made to"produce a continuous and equable liow of water.

By means ot' this pump water can be easily drawn from cisterns or wells, and forced, it' necessary, into the upper stories of houses.

It is a double-action pump, and may be thus described.

The letters A A of the drawing designate the two cylinders or piston-chambers. They are cast separately and open at each end. e

A screw-thread is turned on the lower end of each cylinder', and they are fastened to the bed-piece or foundation casting B, by screwing them into the two circular openings b l, in the .top of the bed-piece,l

shown in tig. 2.

B represents the foundation casting.

Itis made hollow, and-contains the four valves of the pump.

The inlet-valves d d are seated on the slantiug tops of the shoulders D D, cast on the interior of the bedpieee B.

E represents thereceiving-pipe, into which the conducting-pipe F is screwed.

c-c represent the outlet-valves, which hang nearly vertically against their seats 'n n, shown in iig. 2.

q represents the leather piece to which the valves are attached, and which formsthe packing between the upper surface of the bed-piece and the plate d.

G G are the plungers, packed suitably, and attached by the pitmen It h to the arms of the lever K, by which the pump is operated.

H designates a casting, which forms a cover to the cylinders, and from which project the lugs lm., forming a `support for the fulcrum-pin c ot' the lever.

L designates an air-chamber, the lower end. of'

which is screwed into the opening P in the bed-piece shown on fig. 2.

From thelower part ot' this air-chamber, the pipe M passes upward through the orifice in the top ofthe air-chamber, and is connected by the tie-ring e to the -pipe N, which forms an elbow at g, and ends in the spout I".

designates a tube, opening into the pipe N, and to which apipe or hose may be fastened, br the'purpose of conveying the water to the upper stories of buildings, when so desired.

Instead of allowing the water to escape atV p', a section ot pipe may be attached thereto, and water conveyed wherever necessary.

In operating this pump, the upright lever K is worked from side to side, raising and depressing the plungers alternately.

Water is admitted by the opening E and valves l d, and forced through the valves c c into the airchamber L, and thence through the outlet-pipes M and N, wherever desired.

Ihe ow of water through the pipes M and N is continuous and equable, this effect being produced by the double action ofthe plungers in the cylinders A A, aided by the elastic force of the air confined in the air-chamber L.

The water entering by the main inlet E is received into the forked conduit s s, which conducts it to the inlet-valves.

This conduit is cast in the bed-piece.

The opening p communicates with the outletvalves c c by means of the forked conduits s, castY in the bed-piece, and covered by the plate a. The handle K is braced at bottom by the curved bars r 1'.

The bed-piece is fastened to the casting H, covering the tops of the cylinders -A A, by the-bolts and nuts z s.

The valves c'c are bent downward, and kept invby Letters Patent, is-

1. The force-pump, herein described, having removable cylinders AA, connecting-plate H, anges G G, air-chamber L, forked conduit-s s and s, cap a, provided with lugs l,'1eather piece q and valves c,

when the same are constructed, arranged, and combined substantially as specicil.

2; In combination with the valve-seats n n and the leather plate q, bearingthe valve-blocks cvv c, the plate .I `unto subscribed my name 1n the presence of two wit- HESSCS.

Witnesses:

D; D. KANE, C. KENYON.

D. 0': HOLMAN.' 

